The blogger who released a sex video that brought down Chongqing official Lei Zhengfu last year has refused to hand over footage of other officials despite threats of prison time for withholding evidence. Following a late-night visit to his Beijing home by Beijing and Chongqing police on Sunday, Zhu Ruifeng spent seven hours in talks at a police station on Monday, but would not give up the material for fear of incriminating his source. From Chang Meng and Li Xiang at Global Times: